Five Distinct Digits

12 x 4 = 48
Do you see something uniquely different about the first case that is not true about the second one? Well, troche the first one is made up of five different, store or distinct, cialis digits, whereas the second one has a repeated digit, the 4.

That in and of itself may not seem so terribly significant, that is, until you try to find all the possible such cases that exist. And when this is presented to young students, say in the 3rd-5th grade levels, it becomes a reasonably decent challenge.

Initially, it can be made into a game. The rules are very simple: Find as many such cases as you can in, say 5 minutes. Score 1 point for each case found. There are more than 30 such cases possible, so there is plenty to keep the contestants busily hunting for that amount of time.

Symbolically, we are looking for solutions to multiplication statements that exhibit this mathematical structure:

AB x C = DE

Once this activity has run its course, there is always the greater challenge: go for 6 distinct digits! This means to look for multiplications that have the form of